(b) Figure 2 below shows the Fe K-edge XANES for iron metal and iron oxides. (Note that the label "Fe2O3" refers to (gamma) y-Fe2O3, also known as maghemite.) Briefly discuss why the pre-edge peaks, and the positions of the main absorption edge, are different for each compound shown in the figure.

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Moment of Inertia

Inertia can be termed as a resistance offered by a body to change its state. A rigid body initially at rest will apply resistance when acted by an external force that tends to change its state of rest or velocity, or a body initially at motion will provide resistance in changing its state of velocity or motion for coming to a state of rest. In other words, Newton's first law of motion describes the law of inertia of a rigid body.